Hitler Without Cruelty
"The decision taken, the Fuehrer made it known to those
entrusted with the Final Solution that the killings should be
done as humanely as possible. This was in line with his
conviction that he was observing God's injunction to cleanse
the world of vermin. Still a member in good standing of the
Church of Rome despite detestation of its hierarchy ("I am now
as before a Catholic and will always remain so"), he carried
within him its teaching that the Jew was the killer of God. The
extermination, therefore, could be done without a twinge of
conscience since he was merely acting as the avenging hand of
God - so long as it was done impersonally, without cruelty."
from Adolph Hitler, by John Toland, Doubleday Books 1976 pg 703.